<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="css/bootstrap.min.css">
</head>
<body>
<div class="container">
    <a href="#" role="button" class="btn btn-default">Button</a>
    <button class="btn btn-default" type="submit">Button</button>
    <input type="button" class="btn btn-default" value="Button">

    <hr>
    <button>原始</button>
    <button type="submit" class="btn btn-default btn-lg">默认样式</button>
    <button type="submit" class="btn btn-primary btn-sm">首选项</button>
    <button type="submit" class="btn btn-success btn-xs">成功</button>
    <button type="submit" class="btn btn-warning">警告</button>
    <button type="submit" class="btn btn-danger">危险</button>
    <button type="submit" class="btn btn-link">链接</button>

    <hr>

    <button type="submit" class="btn btn-default btn-block">拉至父级的100%</button>
    <button type="submit" class="btn btn-success btn-block">拉至父级的100%</button>

    <hr>
    <button type="submit" class="btn btn-info disabled">无法点击</button>
</div>
</body>
</html>